title: Effect of processing treatments on the white spot syndrome virus DNA in farmed shrimps (Penaeus monodon).
abstract: OBJECTIVE
  To investigate the effect of processing treatments on the destruction of white spot syndrome virus (WSSV) DNA in WSSV-infected farmed shrimps (Penaeus monodon).
  
  
  RESULTS
  The presence of WSSV was tested by single step and nested polymerase chain reaction (PCR). The primers 1s5 & 1a16 and IK1 & IK2 were used for the single step PCR and primers IK1 & IK2-IK3 & IK4 were used for the nested PCR. Various processing treatments such as icing, freezing, cooking, cooking followed by slow freezing, cooking followed by quick freezing, canning, and cold storage were employed to destroy the WSSV DNA. Of the processing treatments given, cooking followed by quick freezing was efficient in destroying WSSV DNA in WSSV-infected shrimp products. Canning, and cooking followed by slow freezing process had some destructive effect on the WSSV DNA, as WSSV DNA in such processed shrimp products was detected only by nested PCR. Icing, slow freezing, quick freezing, and cooking processes had no effect on the destruction of WSSV DNA. A gradual increase in the destruction of WSSV DNA was observed as the cold storage period increased.
  
  
  CONCLUSIONS
  The results indicated that cooking followed by quick freezing process destroy the WSSV DNA.
  
  
  CONCLUSIONS
  WSSV can be destroyed by cooking followed by quick freezing and this combined process can reduce the disease transmission risks from commodity shrimps to native shrimps.
authors.affiliation: Department of Fish Processing Technology, Fisheries College and Research Institute, Tamil Nadu Veterinary and Animal Sciences University, Tuticorin, India.
authors.forename: A Devivaraprasad
authors.initials: AD
authors.lastname: Reddy
authors.forename: G
authors.initials: G
authors.lastname: Jeyasekaran
authors.forename: R Jeya
authors.initials: RJ
authors.lastname: Shakila
mesh_terms: D000818:Animals; D017756:Aquaculture; D003296:Cooking; D004279:DNA, Viral / Q000032:analysis; D005516:Food Microbiology; D005615:Freezing; D033561:Penaeidae / Q000821:virology*; D016133:Polymerase Chain Reaction; D046848:White spot syndrome virus 1 / Q000235:genetics / Q000302:isolation & purification*
chemical_list: D004279:DNA, Viral